vmalloc: fix NULL pointer dereference in is_vm_area_hugepages()
Priority LOW 22Published · Updated
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
- —
- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
- —
- Fix status
- Partial Red Hat: 3 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: vmalloc: fix NULL pointer dereference in is_vm_area_hugepages() find_vm_area() can return NULL if the given address is not a valid vmalloc area. Check the return value before dereferencing it to avoid a kernel crash.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00215 11th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.15.212, 6.1.178, 6.6.145 +4Red Hat: 3 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 2 products
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-74327
- 2026-10-03 Alias added: GHSA-fcv5-2rgw-v385
- 2026-11-06 CISA SSVC decision points changed
References
Other 7
- https://git.kernel.org/stable/c/c741485fa09bf5900f76d95424d86316d0a00331
- https://git.kernel.org/stable/c/b86f98e53df4f5d57259817b8e9a00167b78bae6
- https://git.kernel.org/stable/c/af71c2b88ccae44418e273bdfe0c96be8515151e
- https://git.kernel.org/stable/c/a1bca6b69bd934e2731d009e645038e05d57ce59
- https://git.kernel.org/stable/c/bbd664b7c77f6488cd5652231c0fe01d069a73ea
- https://git.kernel.org/stable/c/55a44f5259e6a5f1d5b11cb0e19e943c9cc62280
- https://git.kernel.org/stable/c/c55dd3b46c1208d6d2ea737a8aefef4aa4c70cb8
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Sources
- CVE-2026-74327 · CVE Program
- CVE-2026-74327 · NVD
- FIRST EPSS
- GHSA-fcv5-2rgw-v385 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-74327 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences